Abstract: In this paper, the priniples of the measurement for terrestrial objects by 2-CM microwave radiometer and its system characteristics are discussed. The measured results of radiometric temperature of a few typical terrestrial oblects by scallop scanning mothed are reported. Objects radiometric ISO-temperature curves are obtaind by scallop scanning toothed. It is shown that according ISO-temperature curves obtained is suffeient for the identification of the object's site of research.